You also may be aware that CFL’s contain small amounts of mercury within the tubes. Sounds strange, huh? However, the amount of mercury released into the environment by CFL’s is far less than if one uses incandescent bulbs. Incandescent bulbs do not contain mercury but they require a lot more energy which requires a lot more coal to be burned. When coal is burned, mercury is released. So as odd as it seems, using CFL’s lowers mercury emissions.
So, how do you properly dispose of CFL’s? Some states require that you recycle. Whether or not it is required, it’s recommended. Take a look here at the EPA’s webpage devoted to CFL’s and their proper disposal/recycling.